petite histoire de lunivers processus faisant intervenir: - forces - - PowerPoint PPT Presentation

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petite histoire de lunivers processus faisant intervenir: - forces - - PowerPoint PPT Presentation

Feb 18, 2023 178 likes •407 views

ESA 2010 / Thales Alenia Space and EADS Astrium concepts for Euclid Planck/ESA Euclid introduction 1. Euclid in brief 2. Euclid science case 3. Euclid payload, instrument, survey, hardware 4. Euclid @ IAS 5. conclusion 6. Herv Dole Institut

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SLIDE 1

1

Hervé Dole

Institut d’Astrophysique Spatiale, Orsay Université Paris-Sud 11 et CNRS Institut Universitaire de France

29 nov 2011 - P2IO Dark Energy workshop Hervé Dole, IAS - EUCLID Overview

introduction 1. Euclid in brief 2. Euclid science case 3. Euclid payload, instrument, survey, hardware 4. Euclid @ IAS 5. conclusion 6.

Euclid

ESA 2010 / Thales Alenia Space and EADS Astrium concepts for Euclid Planck/ESA

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SLIDE 2

petite histoire de l’univers

29 nov 2011 - P2IO Dark Energy workshop Hervé Dole, IAS - EUCLID Overview 2 Hu & White, 2004

processus faisant intervenir:

  • forces fondamentales
  • composantes sombres
  • paramètres cosmologiques
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SLIDE 3

Hu & White, 2004

petite histoire de l’univers

29 nov 2011 - P2IO Dark Energy workshop Hervé Dole, IAS - EUCLID Overview 3

Planck Herschel Euclid

cadre théorique:

  • inflation, conditions initiales

cadre cosmologique et astrophysique:

  • formation et assemblage

des grandes structures

  • accélération de l’expansion:
  • rigines et propriétés
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SLIDE 4

Euclid

29 nov 2011 - P2IO Dark Energy workshop Hervé Dole, IAS - EUCLID Overview 4

contexte: accélération de l’expansion (Nobel 2011) question: nature de l’énergie noire, et matière noire ? comment: cartographie du ciel visible et proche IR du ciel extragalactique

  • bservations:
  • distribution de la matière visible
  • effet de lentille gravitationnelle (faible)
  • amas de galaxies
  • galaxies lointaines
  • évolution des galaxies

voire: exoplanètes plan:

  • Euclid in brief
  • Euclid cosmological probes &

science objectives

  • Euclid payload, instruments, obs.

strategy, hardware

  • Euclid@IAS
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SLIDE 5
  • 1. Euclid: overview (1)

29 nov 2011 - P2IO Dark Energy workshop Hervé Dole, IAS - EUCLID Overview 5

Sélectionné en M2 (2019) Labos impliqués :

  • CEA, IAP

, IAS, LAM,

  • UK, IT, DE, CH, SP

, NL …

Consortium lead : Y. Mellier (IAP) Télescope 1.2 m Détecteur UK et US refroidis entre 120 et 150 K – Imageur visible (VIS) [lead UK] 36CCD 16Mpx, 0.1', 500-900mic – Spectro-imageur proche IR (NISP)

chef de projet : CNES

Lancement Soyuz Kourou Orbite au point de Lagrange L2

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SLIDE 6
  • 1. Euclid: overview (2)
  • 2. project
  • telescope: 1.2m at L2
  • 1 camera wide field visible
  • 1 camera + spectro slitless NIR
  • launch: ~2018-2019
  • operations: 5 yr
  • in competition for ESA Cosmic

Vision class M2

  • 600 ME total cost
  • 3. Need for space
  • small and stable PSF
  • 3x better than on the ground
  • low background for deep NIR

imaging & spectroscopy

  • 1. science
  • theme: how did the Universe originate

and what is it made of ?

  • goal: to map the geometry of the dark

Universe; dark energy, dark matter, test of gravity, initial conditions

  • strategy: all extragalactic sky (i.e.

half-sky) visible and NIR survey

  • targets: galaxies and clusters of

galaxies out to z~2, in a wide extragalactic survey covering 20 000 deg², plus a deep survey covering an area of 40 deg²

  • tools: weak lensing, BAO, clusters

and galaxies statistics, etc.

  • additional science: galaxies, AGNs,

clusters, exoplanets, ..

29 nov 2011 - P2IO Dark Energy workshop Hervé Dole, IAS - EUCLID Overview 6

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SLIDE 7
  • 2. Euclid main cosmological probes
  • weak lensing

tomography

  • cluster counts
  • ISW (galaxies+CMB)
  • baryonic acoustic
  • scillations
  • redshift-space distortions

29 nov 2011 - P2IO Dark Energy workshop Hervé Dole, IAS - EUCLID Overview 7

from Yellow Book

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SLIDE 8

primary science objectives

  • Euclid will measure the dark energy equation of state

parameters w0 and wa to a precision of 2% and 10% from the geometry and structure growth of the Universe.

  • Euclid will thus achieve a Dark Energy Figure of Merit of 500(1500)

without (with) Planck Priors, thus improving by a factor of 50 (150) upon current knowledge.

  • Euclid will test the validity of General Relativity against

modified gravity theories, and measure the growth factor exponent γ to an accuracy of 2%.

  • Euclid will study the properties of dark matter by mapping its

distribution, testing the Cold Dark Matter paradigm and measuring the sum of the neutrino masses to a few 0.01eV in combination with Planck.

  • Euclid will improve the constraints on the initial condition

parameters by a factor of 2-30 compared to Planck alone.

29 nov 2011 - P2IO Dark Energy workshop Hervé Dole, IAS - EUCLID Overview 8

from Yellow Book

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SLIDE 9

legacy science

  • extragalactic
  • high quality morphologies, masses, and star-formation rates for billions
  • f galaxies out to z~2
  • over the entire extra-galactic sky, with a resolution 4 times better and 3 NIR

magnitude deeper than ground based survey

  • probe the ‘dark ages’ of galaxy formation
  • find thousands of galaxies at z>6
  • of which about 100 could be at z>10 i.e., probing the era of reionization
  • These high-z galaxies and quasars will be targets for JWST and E-ELT
  • strong lenses, mass function of galaxy clusters
  • med-z supernovae
  • Galactic
  • augment the Gaia survey of our Milky Way
  • several magnitudes deeper
  • add NIR colors for the brighter *: breaking the age-metallicity degeneracy
  • low surface brightness tidal streams of stars: probe the evolution of MW
  • exoplanets microlensing

29 nov 2011 - P2IO Dark Energy workshop Hervé Dole, IAS - EUCLID Overview 9

from Yellow Book

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SLIDE 10
  • 3. Euclid satellite & instruments
  • 1 caméra visible grand champ (0.5o2): VIS: forme des galaxies
  • 1 bande couvrant: R + I + Z (0.55 – 0.92um)
  • magnitude limite AB: 24.5 (10 sigma, extended source)
  • résolution: 0.10 arcsec
  • FWHM: 0.16 arcsec
  • 1 caméra/spectro NIR grand champ (0.5o2): NISP: photométrie, photo-z’s et

spectroscopie: z

  • 3 bandes: Y, J, H (1.02, 1.2, 1.6um -> coverage from 0.92 to 2.0um)
  • magnitude limite AB: 24 (5 sigma, point source)
  • résolution: 0.30 arcsec
  • spectro slitless:
  • R~200-600, 0.9-1.7um (raie Ha: 0.5 < z < 2, ≠ roll angles pour confusion; >5x107 z)
  • stratégies
  • step-and-stare
  • 1 survey WIDE de 20000 Sq. Deg.
  • 1 survey DEEP de 40 Sq. Deg.
  • 2 magnitudes plus faibles (imagerie et spectro) i.e. flux 6.3 fois plus faibles

29 nov 2011 - P2IO Dark Energy workshop Hervé Dole, IAS - EUCLID Overview 10

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SLIDE 11

euclid wide vs deep imaging surveys

29 nov 2011 - P2IO Dark Energy workshop Hervé Dole, IAS - EUCLID Overview 11 & H. Dole

Euclid Wide 20000 Sq. Deg. 40 Sq. Deg.

note: deepest Spitzer IRAC 3.6um 5 sigma sensitivity: 40 nJy (Sullivan+2007

  • n GOODS) (-1.39 on this y-axis)
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SLIDE 12

some numbers

29 nov 2011 - P2IO Dark Energy workshop Hervé Dole, IAS - EUCLID Overview 12

  • Y. Mellier – Jan 2011
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SLIDE 13

expected redshift distribution

29 nov 2011 - P2IO Dark Energy workshop Hervé Dole, IAS - EUCLID Overview 13

Euclid Yellow Book, 2009, ESA

galaxies: H-alpha emitters clusters

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SLIDE 14

accuracy in H(z), DA(z), 8

29 nov 2011 - P2IO Dark Energy workshop Hervé Dole, IAS - EUCLID Overview 14

Euclid Yellow Book, 2009, ESA

  • accuracy in slitless z: < 0.001(1+z)
  • accuracy in photo-z: < 0.005(1+z) [goal: 3%]
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SLIDE 15
  • 4. Euclid @ IAS
  • science
  • data processing
  • level 2 (OU6)
  • instrumentation
  • conception, realization and

integration of VIS flight calibration unit

  • testing
  • tests and calibration of focal

plane at IAS station d’étalonnage

29 nov 2011 - P2IO Dark Energy workshop Hervé Dole, IAS - EUCLID Overview 15

Euclidization L2

raw data VIS & IR

images & catalogs

integrating sphere w/ LEDs

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SLIDE 16

Euclid Science @ IAS

  • cosmology
  • ISW: galaxies + Planck

CMB

  • clusters
  • structures
  • physics of high-z
  • bjects
  • extreme infrared

galaxies discovered by Planck

29 nov 2011 - P2IO Dark Energy workshop Hervé Dole, IAS - EUCLID Overview 16

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SLIDE 17

conclusions

  • 2019 may seem a long time...
  • furthermore the schedule might shift
  • pipeline, methods, simulations
  • data management, human management
  • science preparation

29 nov 2011 - P2IO Dark Energy workshop Hervé Dole, IAS - EUCLID Overview 17

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SLIDE 18

Euclid

29 nov 2011 - P2IO Dark Energy workshop Hervé Dole, IAS - EUCLID Overview 18 ESA 2010 / Thales Alenia Space and EADS Astrium concepts for Euclid

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SLIDE 19

w(z), gamma_m

29 nov 2011 - P2IO Dark Energy workshop Hervé Dole, IAS - EUCLID Overview 19

Euclid Yellow Book, 2009, ESA

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SLIDE 20

test of gravity

29 nov 2011 - P2IO Dark Energy workshop Hervé Dole, IAS - EUCLID Overview 20

Euclid Yellow Book, 2009, ESA

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SLIDE 21

initial conditions

29 nov 2011 - P2IO Dark Energy workshop Hervé Dole, IAS - EUCLID Overview 21

Euclid Yellow Book, 2009, ESA

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SLIDE 22

some key documents

  • Euclid Imaging Consortium Science Book
  • Réfrégier et al.: arXiv:1001.0061
  • Euclid Assessment Study Report for the ESA Cosmic Visions (Yellow Book)
  • Laureijs et al.: arXiv:0912.0914
  • http://sci.esa.int/science-e/www/object/index.cfm?fobjectid=46431

29 nov 2011 - P2IO Dark Energy workshop Hervé Dole, IAS - EUCLID Overview 22